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11 Cards in this Set
- Front
- Back
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which of these groups of particles has the greatest mass
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a. 4 individual protons |
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scientists estimate the central temperature of the sun using which? why not others?
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a. mathematical models of the sun |
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at the center of the sun, fusion converts hydrogen into
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b. helium & energy |
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solar energy leaves the core of the sun in the form of
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b. photons |
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which layer of the sun is the coolest
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b. photosphere |
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why do sunspots appear darker than their surroundings
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c. theyre cooler than their surroundings |
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what do we need to measure to determine a stars luminosity
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b. apparent brightness and distance |
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what 2 peices of info would u need in order to measure the mass of stars in an eclipsing binary system
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a. time between eclipses and the average distance between the stars |
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which star has the coolest surface temperature
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c. K star |
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which star is most massive
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b. Main-sequence A star |
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which star has the longest lifetime
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a. main-sequence M star |
